Fire Mode: Lop Installations - JSG M2AP01 Operation & Installation Manual

FIRE MODE : LOP INSTALLATIONS
In LOP installations the Alarm Panel monitors the pressure in the system and assumes a fire condition if the pressure
drops rapidly.
Once activated the Alarm Panel goes through a strict sequence of events as follows:
1. The ALARM relay contacts are activated.
2. The buzzer and FIRE indicator goes into a ½ second on – ½ second off cycle.
3. The DISCHARGED indicator is lit.
4. If the SHUTDOWN delay is set to 0 seconds the SHUTDOWN relay will activate immediately, otherwise the
SHUTDOWN delay timer starts to count down from its set value (see SETUP).
5. Step 5 is skipped if the SHUTDOWN delay is set to 0 seconds:
5 seconds before actual SHUTDOWN the buzzer and FIRE indicator change to a ¼ second on – ¼ second off cycle
to indicate the impending shutdown. At any stage during the SHUTDOWN delay the operator can press the DELAY
SHUTDOWN button to extend the delay by a further 6 seconds. This can be done a maximum of twice. After the
SHUTDOWN delay is over the SHUTDOWN relay is energized and if this circuit is used the machine will shut down
permanently. The buzzer and FIRE indicator will revert to a ½ second on – ½ second off cycle.
6. 5 seconds after shutdown the delay button can be held down and the machine can be started and relocated.
Once the button is released the machine will shutdown instantly. Repairs to the fire suppression system should be
completed first before the use of this function.
7. 15 minutes after detection of a FIRE the panel will go into a low power mode where the buzzer and FIRE led will
only flash briefly every three seconds.
EXITING FIRE MODE & RELEASING THE SHUTDOWN RELAY (LOP SYSTEMS):
After a fire event the Alarm Panel remains in FIRE mode and the SHUTDOWN relay remains energized. The TEST button
serves no purpose. To exit FIRE mode the following procedure must be followed:
1. Using a Hex Key, remove (for a minimum of 5 seconds) and then re-install the panel face. This will release the
SHUTDOWN relay.
2. Press the TEST button to reset the Alarm Panel.
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